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Alaska Earthquake History
Since October 9, 1900, the USGS has recorded 5,198 earthquakes of magnitude 4.5 or greater in Alaska, 420 of them magnitude 6 or above. The strongest was M 9.2.
By decade
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Strongest in Alaska
M 9.2 · The 1964 Prince William Sound, Alaska EarthquakeMarch 28, 1964M 8.6 · The 1946 Unimak Island, Alaska EarthquakeApril 1, 1946M 8.2 · 1938 Semidi Islands, Alaska EarthquakeNovember 10, 1938M 8.2 · 2021 Chignik, Alaska EarthquakeJuly 29, 2021M 7.9 · 261 km SE of Chiniak, AlaskaJanuary 23, 2018M 7.9 · 2002 Denali Fault, Alaska EarthquakeNovember 3, 2002M 7.9 · 200 km WSW of Yakutat, AlaskaNovember 30, 1987M 7.9 · Kodiak Island region, AlaskaOctober 9, 1900M 7.8 · 81 km E of Nikolski, AlaskaJuly 2, 1965M 7.8 · 22 km W of Elfin Cove, AlaskaJuly 10, 1958
All recorded earthquakes
M 4.9 mwwMay 9, 2023
59 km WSW of Unalaska, Alaska · depth 92 km
M 4.6 mwrMay 5, 2023
153 km S of False Pass, Alaska · depth 17 km
M 4.5 mbMay 3, 2023
Unimak Island region, Alaska · depth 19 km
M 4.8 mbApril 24, 2023
164 km SSE of Perryville, Alaska · depth 6 km
M 4.8 mwrApril 10, 2023
Kenai Peninsula, Alaska · depth 56 km
M 4.9 mwwApril 8, 2023
Fox Islands, Aleutian Islands, Alaska · depth 67 km
M 4.9 mbMarch 20, 2023
111 km NNW of Nikolski, Alaska · depth 215 km
M 5.4 mwwMarch 19, 2023
19 km SSW of Anchor Point, Alaska · depth 65 km
M 4.9 mbMarch 17, 2023
149 km SSE of Cordova, Alaska · depth 9 km
M 4.5 mbMarch 7, 2023
93 km SSE of Sand Point, Alaska · depth 35 km
M 4.7 mbMarch 2, 2023
44 km W of Lake Minchumina, Alaska · depth 10 km
M 4.5 mbMarch 1, 2023
53 km SE of Port Graham, Alaska · depth 24 km
M 4.6 mbFebruary 27, 2023
32 km SSW of Larsen Bay, Alaska · depth 27 km
M 4.7 mwrFebruary 24, 2023
51 km SE of Port Graham, Alaska · depth 42 km
M 4.8 mbFebruary 24, 2023
94 km SSE of King Cove, Alaska · depth 44 km
M 5.4 mwwFebruary 21, 2023
43 km SSE of Old Harbor, Alaska · depth 12 km
M 5.0 mwwFebruary 2, 2023
58 km W of Tyonek, Alaska · depth 113 km
M 4.5 mbJanuary 25, 2023
Kodiak Island region, Alaska · depth 53 km
M 4.8 mbJanuary 22, 2023
Fox Islands, Aleutian Islands, Alaska · depth 129 km
M 4.6 mbJanuary 21, 2023
Unimak Island region, Alaska · depth 29 km
M 4.9 mbJanuary 19, 2023
161 km S of False Pass, Alaska · depth 9 km
M 4.5 mwrJanuary 16, 2023
10 km NNE of Meadow Lakes, Alaska · depth 35 km
M 4.8 mbJanuary 11, 2023
98 km NW of Yakutat, Alaska · depth 11 km
M 5.0 mwwJanuary 10, 2023
199 km SE of Perryville, Alaska · depth 20 km
M 4.7 mbJanuary 8, 2023
137 km SE of Akutan, Alaska · depth 22 km
M 4.6 mwrDecember 31, 2022
51 km SSE of Sand Point, Alaska · depth 39 km
M 4.6 mbDecember 24, 2022
124 km S of Unalaska, Alaska · depth 18 km
M 4.9 mbDecember 21, 2022
159 km SE of King Cove, Alaska · depth 17 km
M 4.7 mwrDecember 12, 2022
48 km SE of Halibut Cove, Alaska · depth 37 km
M 4.9 mbDecember 5, 2022
87 km SSE of Nikolski, Alaska · depth 11 km
M 4.8 mbDecember 1, 2022
82 km SSW of Unalaska, Alaska · depth 44 km
M 4.6 mbNovember 22, 2022
78 km SE of Nikolski, Alaska · depth 40 km
M 5.5 mwwNovember 21, 2022
86 km SSE of Nikolski, Alaska · depth 13 km
M 4.6 mbNovember 20, 2022
86 km NNW of Karluk, Alaska · depth 4 km
M 4.9 mwwNovember 18, 2022
10 km W of Point MacKenzie, Alaska · depth 43 km
M 4.5 mwrNovember 8, 2022
80 km E of Nikolski, Alaska · depth 43 km
M 4.5 mbNovember 6, 2022
190 km ESE of Nikolski, Alaska · depth 10 km
M 4.7 mbOctober 26, 2022
31 km ENE of Saint George, Alaska · depth 12 km
M 4.9 mwwOctober 26, 2022
52 km SSE of Sand Point, Alaska · depth 40 km
M 4.6 mbOctober 12, 2022
82 km S of Akhiok, Alaska · depth 6 km
Source: U.S. Geological Survey, Earthquake Hazards Program. Older and smaller earthquakes are under-counted relative to recent decades as instrumentation improved. A record of past shaking is not a forecast. See About the Data.